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NMSSM Higgs pp → WH+X in CMS S.Lehti Helsinki Institute of Physics

NMSSM Higgs pp → WH+X in CMS S.Lehti Helsinki Institute of Physics. What’s been done so far. Skype conference in March Moretti, Hesselbach, Shepherd, Lehti A preliminary scenario was selected so that events can be simulated and tested a1→  ,  final state was left open

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NMSSM Higgs pp → WH+X in CMS S.Lehti Helsinki Institute of Physics

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  1. NMSSM Higgs pp→WH+X in CMSS.LehtiHelsinki Institute of Physics • What’s been done so far

  2. Skype conference in March • Moretti, Hesselbach, Shepherd, Lehti • A preliminary scenario was selected so that events can be simulated and tested • a1→,  final state was left open • 10k events simulated with PYTHIA Pythia parameters: ”MSEL = 0”, "IMSS(1) = 1 ! switch on susy", "IMSS(4) = 2 ! higgs parameters are set by hand", "MSUB(172)= 1 ! WH", "MDME(220,1)= 1 ! h->tautau (a1->tautau)", "MDME(352,1)= 1 ! H->hh (h1->a1a1)“, "MDME(206,1)= 1 ! W->enu“, "MDME(207,1)= 1 ! W->munu", "PMAS(25,1)=5.3 ! mass of h0", "PMAS(35,1)=105.0 ! mass of H0", "PMAS(36,1)=133.0 ! mass of A0", "PMAS(37,1)=133.0 ! mass of H+"

  3. Trigger • Associated W used for triggering • Trigger: single electron or single muon • Thresholds 19 GeV (muon) and 26 GeV (electron) • Planning to use also the special non-isolated double-mu trigger (when it becomes available)

  4. a1 →: R()

  5. Selection • Perhaps the best final state: muon+taujet • clean signal, good backgr rejection expected • BR not too low • less MET than in fully leptonic final state • the new trigger can be used all events 3197 isol lepton 1564 (trigger lepton) 2 (other) muons 42 (eff 2.7% only!) 2 tau jets 5 (muon in taucone)

  6. Very soft taus!

  7. Mass reconstruction,no neutrinos taken in account

  8. Mass reconstruction,collinear approximation

  9. Mass reconstruction,neutrinos estimated using a1 mass Does this work with backgrounds?

  10. Questions • Benchmark scenario needed • pp→WH+X cross section for the benchmark scenario • backgrounds: • W+jets • QCD • Other potential backgrounds? • Switching from PYTHIA to ..CompHEP? How to simulate the signal?

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